Stop-motion for knitting-machines.



J. B. HIPWELL.

STOP MOTION FOR KNITTING MACHINES. APPLICATION nun APR. 12. 1901.

906,880. Patent'ed Dec. 15. 1908 2 SHEETS-'8 KBET 1.

.1011: F. mpmzz,

;! I attozwma J. B. HIPWELL.

STOP MOTION FOR KNITTING MACHINES.

APPLIGATIOK FILED APR. 12. 1907. Patented Deg. 15'

2 SHEETS-BHEET 2.

oewtoz Jami Hpwefi,

attouwq UNITED "STATES, PATENT OFFICE.

JQHJH B? HlPWllLL Q E READING. PENNSYLVANIA. ASSIGXOR TO WINDSOR MACHINE COM- PA-NY, OF READING, PENNSYLVANIA. A CORPORATION OF PENNSYLVANIA.

siTOP-MOTION FOB KNITTING MACHINES.

To till whom it may concern:

:Be it known that I, JOHN BJ HIrwELL, a r

' citizen of the United States, and a residcnt of niecity of Reading, in' the county of Berks and State of Pennsylrania, have 111 vented cert-am: new and'useiul Improvements in Stop-Motions for Knitting-Machine oi" which the following 1S! specification.

My invention relates particularly to (it'- oular knitting machines in which relatively fixed bobbins arerniplovod, and it white in improved mechanism whereby the nun. chine will be promptly stopped nut-tinnitically either by the failure of the thread. by

undue tautness of the. Sit-Int, or hcn hunoht-s or knots occur. 7 t

Figure 1 a; a sectional elevation oi at pul tion of a knitting head indicating the ht-ltshifter mechanisinand dctent-cntch in their Ajshows the stop-motion nioohanihin in connection with the fixed bobbin. the ports bein re resented in nornml ont-rativc .H):-l

tioni'h Fig. 5 is El i'ragmonturv view corn-- sponding with Fig. 4-. but indicating the pubit-ion the parts assume when operated by the failure or tighteninfl' of the thread. Fig. ti is a sectional plan view taken on the tim t'-- o of Fig. Figs..? and Snrc svpn't'ntt' vim-- As indicated in Figs. I and '1 thc pulley shaft 1, which drives the min cylinder through bevel gear 2., in provided with a pinion 3 fixed to the pulley 4 and ]\t(-llillt with a crank-gear 5 7. which latter is con nt'ott-d by a rod 6 to a l'tWh-llttl 7 so as to impart reciprocating movement .to the shtti t 1 and the cam cylinder when a clutch on said shnit (not shown) is thrown into cngagcnu-nt with a rack cngaging pitrii'nrh'; thc parti ular conistruction indicated lit-in more full slmrsn in Patent No. 317,775. ln'stlttl to mc .i ril 17th, 1906. The guide-lair U of the spring pressed belt shifter It) i pl'mhh'd with a notch H to receive it spring-lifted latch lever 12, the depression oi which ltrlOth'vs the belt-shifter to tl'irmv the belt to tho hum puller 13. To provide for dcprtwing t!:i-' latoh lcvcr 1'. itUiLUllltLlittLli by lllt'ttlh ol' the attached lllt'lclltlillflll hcrotiiter described,

and for sintultanehusly throwing into :u'tion l Specification oLLetters Patent.

t ti anon filed April 12, 1907. Serial No. 367,828.

Patented. Dec. '16, 1908.

a positive stop, I provide a transversely arranged stop lever 20, pivoted at 21 to the machine and extending under the inner end of the latch lever 12. As shown I carry upon the projected end 22 of this stop lever, by means of nuitable hanger 23, 24 having a slotted connection 25, the free end of a latch 26. adapted when lowered to engage the notched rini "37 of a -.-pring depressed detctitoperating arm 29 arranged to lower thc pivoted detcnt 130 into engagement with the gear wheel 5 when the latch '26 is raised, and to swing it out oi engagement therewith lici'ore renal-ting the machine. As shown, the notched ring 27 i-' fixed to the arm 29 t'tmttilitit' with itw pivotal axis, and the- :1 rm i.-. not'nnillv de rcmcd h coiled spring; 38 indirntt'd in .3.

hi iiizproh-d toj. :nulhm ntttnrh'nicti't is carried u htiindtnd it secured to the nutchino i'ruine adiacent the hohbin post 41. To this standard are secured brackets 42 and ;3 which serve as guides for ti vertically mmzthle stop or hammer-rod H arranged directly above htcnd oi the stop motion lrx or tit! as shown 'in Fig. 1, so that the dc St't'ltl oi said lmmtncr-rod, actuated hr .1. spring; 3. will dopl'tss said end of lover it! for the purpose o opcrnting: llttiitlt-Slllfittl' 1 and dctcnl I-itl us already described. The nppci' rod to of thc hummer-rod is t'ronneotod t tho ottttl' cud ot' a pivoted arm 47, which arm is nornnillv hrld in the elevated position indicated in Fig. 1, hr it.lmnnncr-rodlever l8, pivoted at -15) to a bracket on tho atandard 41); said lever 48 being supported hr a trigger mechanism which is automatic ally operated by the thread 51 from the bobhin, as Will-110W be described.

The inner end 5'. of the lever 48 isnornially depressed to raise the hannner-rod 44,

hr moons of n trigger-engaging arm 53 the free end of which is held by the notched trig:- gvr 3 t. This trigger has an arm 55 which is tlll:.l.1 '(l by a trigger-operating trip lever 56, Ulll arm of which as shown, is arranged in the pot h of two tripping fingers arranged to engu-rttlnhread .il umntelvthc i'eeler-finger on. and t n luiotJ-ingmtil. The feeler-fin- LIPI W i of' ordinary construction, being pivotr-tt :ti L; :Hi l ttottnulh h ld in vertical posilimit ll hp.'- rtol'lhu thread between it illlll the Mir: p ndingrl) grated iixcd int-ni- 'ncr or, it lo Fig. I, The knot-linger (it, which ipiwtcd to tilt hrzn-lwt 50 at. (H, is

provided with a tripping-projection 65, which, like the similar PIOJBO'DiOIl 66 of the feeler-finger 60, is normally located in close proximity to the before mentioned arm of the trigger-operating lever 56 so that an upward movement of the thread on aging end of the knot-finger will swing said ever 56 in the same manner as does the fall of the feelerfinger 60 (see Fig. 5) so as to in either case release the trig er 54 and permit the fall of the hammer-r0 44.

The thread engaging end of the knot-finger 61 is preferably constructed as indicated in Figs. 7 and 8, to provide for adjustably gaging the passing t read and obstructing the passage of any objectionable enlargement or knot. The horizontal thread plate 70 is formed with an enlarged thread opening 71, and with athreading-slot 72 leading thereto; and this opening and slot are covered by an adjustable gage-plate 73, which may be secured by a screw 74 in such position as to provide any desired width of passage 75 for the thread, whereby any abnormal enlargement of the latter will be barred, and consequently act upon the finger to raise it and release the hammer-rod trigger as previously described.

'l he thread 51 from the bobbin, after assing through the fixed guide eye 80 an the knot-finger 61, and feeler-finger 60, as described, is carried upon the swee 8 1, which is pivoted to the to portion of t eflstandard 40 and normally helh in approximately horizontal position by a spring-pressed rod 82 so as to be readily depressed by any undue tension upon the thread. As shown this springpressed supportingrod 82 for the sweepJs provided at lts lower end with a trigger-operating finger 83 arranged to contact with the trigger-54 so as to directly release the latter when the sweep is depressed; the thread,

which extends through the guide-eye 85 to the machine, being thereafter released from the sweep so as to provide amgleslack during the stoppa e of the machine.

at I c aim is 1. The combination with a drive member shifting lever and rotary g'ear wheel, of a de tent for the latter, a spring pressed operatin lever for said detent, a latch device for sai operating lever, a pivoted stop-lever arranged to successively opera e said shifting lever and latch, and a stop-m bt'mp mechanism adapted to automatically ac iuate said stop-lever substantially as set forth.

2. The combination with a drive member shiftinglever and rotary gear wheel, of a de tent for the latter, an operating lever for supporting sai said detent having a latch, a pivoted stoplever arranged to operate said shifting lever and having a slotted-link connection to sttid latch, and a sto -motion mechanism adap ed to automatica y actuate said stop-lever substantially as set forth.

. 3. In a'stop-motion mechanism the combination with the movable sto -rod and movable thread-feeler finger, of the pivoted carrying arm for said rod, the pivoted stoprod ever arrangpd to normally support said carrying arm, t e trigger-engaging 'arm and the notched trigger arranged to normally support said stop-rod lever, and the pivoted trip-lever connected to said tri ger and adapted to be operated by the feefisr finger, substantially as set forth.

4. In a stop-motion mechanism the combination with the movable stop-rod and the thread-carrying sweep, of the pivoted carrying arm for said rod, the pivoted sto -rod lever arranged to normally support sait carryin arm. the trigger-en aging arm and the note ed trigger arrange to normally sup port said stop-rod lever, and the springpressed supporting rod for said sweep arranged to engage and operate said trigger, substantially as set forth.

5. A stop-motion mechanism comprising a movable sto -rod, a carrying lever therefor, a pivoted trigger and'trigger-engaging arm supporting said carrying lever, a trip-lever for said trigger, and movable feeler'and knot fingers arranged to independently o erate said trip-lever, substantially as set fort 6. A stop-motion mechanism comprising a movable stop-rod, a carrying lever therefor, a pivoted trigger and trlgger-engaging arm carrying lever, a thread-carrymg sweep with spiin -pressed carrying rod adapted to operate sai trigger, and movable feeler and knot-fingers arranged to sepapatetlly operate the same, substantially as set ort finger comprising a relatively fixed plate havin an enlarged thread-opening with a three ing-slot leading thereto, and a gageplate supported u on said fixed plate and adjustaby secure thereto to cover regulated portions only of said slot and threadopening and thereb limit the thread passa e-way substantia ly as set forth.

n testimony whereof, I afiix my signature. in the presence of two witnesses.

JOHN B. HIPWELL. Witnesses:

D. M. S'rnwAR'r, W. G. STEWART.

7. In a stop-motion meehiihism, a knot- 

